Alloy.



DAVID J". HAUSS, O]? AURQRA, INDIANA; BARBARA .HAUSS, AEMINISTR-ATRIX OF SAID DAVZD J. HAUSS, DECEASED, ASSIGIQ'OR TG F. W. GALBEAI'II Patented Feb. 4, 1919.

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Lggig ngig Specification of Letters Patent. No Drawing.

1' b all whom; it may concern.-

Be it;- known that l, DAVID J. Hauss, a citizen of the United States, residing at Aurora, in the county of Dearhorn and State oi.lndiana, have invented certain new and useful lll'll'H'UVQlllOllliS in Alloy, of which the following" is a specification.

My invention relates to improvements in metallic alloy. Que of its objects is to provide an alloy having great strength combined with a low fusingpoint. i iuother object is to provide an alloy having a high degree of fluidity when fused, combined. with strength when solid. Another ohjert is h. provide an alloy capable of resisting corrosion from eii'po sure to the atmosphere, n'ioisture or other corrosive agencies. Another object is to provide an alloy of great strcngt h and of comparatively lo\v spccific gravity.

My invention also comprises certain do tails of proportion and procedure, all of which will he set; forth in the following specification.

One method of as follows:

Metallic aluminum and metallic substantiialbr the proportions of aluminum and 24: to 25 parts of zinc are melted together in' a crucible, using a. protecting film or covering of granulated carbon, preferably charcoal. When the alumimum and zinc have fused together, which should occur at fron'i 1.160 to 120") degrees F, I quickly and. carefully add a previously prepared capsule containing 3 parts mcta'llic copper and 9 a to 1} part of metallic magnesium. The effect. of adding the contents of the capsule is to greatly and to reduce the fusing point. The metallic copper remains as a component of the alloy, but. the n'iagnesiuni ishelievcd not to enter to any extent as a component of the alloy, but instead to serve the purpose of removing any metallic oxids from the body 'of the alloy. Itv therefore probable that metallic calcium or similar metal having a stronger atlinit v than aluminum for oxygen, could he substituted in substantiz'illy like proportion for the magnesium i'nentioncd.

My ii'nprovcd alloy can also he produced electrolytically hy cn'iploying one or a plurality of anodes oi carbon and metal and prcferal'ily a single cathode so that. one of proilucing my ncw alloy is nine in 72 parts the metals, say the aluminum or zinc may of great strength and increase the fluidity Application filed June 26, 1916. Serial No. 105,866.

be derived by electrolysis from the electrov .lytc while the others are transferred from the anode or anodes in quantity to produce an alloy of the desired proportions by regulating the amount of current through said respective anodes. When produced clectrolytically the magnesium or its equivalent is dispensed with as the current serves to reduce or prevent the formation of any metallic oxids in the alloy at the cathode.

My new alloy possesses the following characteristics, the metals are present in substantially the following proportions:

72 parts aluminum, 2% to parts zinc, 3 parts copper.

it melts at approxin'iately 1000 F., and is very fluid, as distinguished. from pasty so as to adapt it to the for-oration of tl1i11, 75 sharp and strong castings. Its tensile strength is in excess of 40,000 pounds .per

, square inch. Its specific gravity is not matcrially greater than thaluof metallic alumi-. num. i

The proportion of copper may be varied slightly; an increase in the amount of copper increases the tensile strength, but also raises the melting point, while a decrease of the amount of copper decreases the strength but does not correspondingly lower the melting point.

An increase in the proportion of zinc do creases the tensile strength and does not in other respects improve the qualities of the alloy. A decrease in the quantity of zinc does not improve the qualities of the alloy either by increasing the strength or reducing the melting" point.

it is believed that the low melting point and great; strength of my new alloy is due to the formation of a definite chemical compound when comhincd in substantially the proportions specified asdislinnuishcd from a simple alloy or metallic solution such as is comn'ionly (signaled by the te m alloy.

The capsule emplzrvcd to introduce the copper and magnesium may he of gelatin, cardboard, or other material which will not affect the con'iposit'ion of the alloy, and is employed chiefly to assist in introducing the metals, which are more or less finely divided to, a pointhcloiv the surface of the fused metal heiore reaction of a chemical nature commences. l

mws wm Having described my jnventiml or dis In testinwny whereof 1 have affimd my covery, What I 01mm 15: signature 1n the presence 0% Wm wlmessw.

1 11 y z nlpoaa .1 01 su tantml 3 AD UL HAUggfl seventy-two parts aluminum, twentyiom" to twent five mrts zinc, and; three parts Wit-nessea;

coppe'r, said. alloy being pirzmicafiy free "WK-Mimi from the oxids of said mamls. W. 'iifiomq'mm 380mm, 

